StaplesMan
Technical User
I have a Cisco Router 2651XM. It's setup with NAT. I have a single nat command to forward all ports to my Linksys spa2102. Tested and works. From the outside I can easily http into the configuration console of the SPA without any needed ip nat commands.
ip nat inside source static 192.168.xxx.xxx interface FastEthernet0/0
FA0/0 is set to DHCP and connected directly to cable modem and get's a public IP address.
192.168.xxx.xxx is the ip address of the SPA
Also have setup QOS.
I can receive calls without any problems. Very reliable. sound quality is top notch. Can even upload and download without any degradation in sound quality.
The only problem I seem to have is outbound calls last exactly 20 seconds and then the call is silent. (no incoming data)
I have VYL Media as my voip-sip provider.
Searched the internet all over and it seems others have the same issue. But can't find any real fix of what causes the problem.
There is an option in the SPA that allows it to send NAT keep alives. This is set to 10 seconds.
O and if I place the SPA before my router I have no VOIP problems at all. But if I put the SPA in NAT mode (to allow me to use only one IP address) my 10MBps speed his halted at around 6-8Mbps tops. If I place it in Switch mode I can get full 10Mbps (but this will require two public IP address).
I would prefer to get the SPA behind my Cisco router.
Any and all help would be welcome.
CCNA, A+, HP Certified Professional
ip nat inside source static 192.168.xxx.xxx interface FastEthernet0/0
FA0/0 is set to DHCP and connected directly to cable modem and get's a public IP address.
192.168.xxx.xxx is the ip address of the SPA
Also have setup QOS.
I can receive calls without any problems. Very reliable. sound quality is top notch. Can even upload and download without any degradation in sound quality.
The only problem I seem to have is outbound calls last exactly 20 seconds and then the call is silent. (no incoming data)
I have VYL Media as my voip-sip provider.
Searched the internet all over and it seems others have the same issue. But can't find any real fix of what causes the problem.
There is an option in the SPA that allows it to send NAT keep alives. This is set to 10 seconds.
O and if I place the SPA before my router I have no VOIP problems at all. But if I put the SPA in NAT mode (to allow me to use only one IP address) my 10MBps speed his halted at around 6-8Mbps tops. If I place it in Switch mode I can get full 10Mbps (but this will require two public IP address).
I would prefer to get the SPA behind my Cisco router.
Any and all help would be welcome.
CCNA, A+, HP Certified Professional